908816449 has 2 divisors, whose sum is σ = 908816450. Its totient is φ = 908816448.

The previous prime is 908816423. The next prime is 908816453. The reversal of 908816449 is 944618809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856615824 + 52200625 = 29268^2 + 7225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-908816449 is a prime.

It is not a weakly prime, because it can be changed into another prime (908816479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454408224 + 454408225.

It is an arithmetic number, because the mean of its divisors is an integer number (454408225).

Almost surely, 2^908816449 is an apocalyptic number.

It is an amenable number.

908816449 is a deficient number, since it is larger than the sum of its proper divisors (1).

908816449 is an equidigital number, since it uses as much as digits as its factorization.

908816449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 908816449 is about 30146.5827084928. The cubic root of 908816449 is about 968.6318079101.

The spelling of 908816449 in words is "nine hundred eight million, eight hundred sixteen thousand, four hundred forty-nine".